TMPI is the name we are known for. However, the expanded version is Thermionics Metal Processing, Inc.

TMPI operates from Monday through Friday from 8:00AM to 5:00PM.

TMPI’s address is 3118 Depot Rd, Hayward, CA 94545.

TMPI has been an industry-leading precision parts cleaning business for over 50 years.

In order to protect interests of both our customer’s and our proprietary processes, we require all customers to sign an NDA before requesting their first service.

Reach out to our sales department at sales@tmpi.us. First time customers may be asked to provide a W9, sign an NDA, and other relevant forms.